Robert Kagan — American Writer born on September 26, 1958,

Robert Kagan is an American historian, author, columnist, and foreign-policy commentator. Kagan is often characterized as a leading neoconservative, but prefers to call himself a "liberal interventionist"... (wikipedia)

I think most Americans believe that although it's better not to use military force if you can avoid it, that the world simply doesn't provide us the luxury of giving away military force as an important tool of foreign policy.
Based on all criteria - military power, economic influence, cultural dominance - America remains number one, even though other, new players are increasingly challenging it in that role.
In my view, America has never had the opportunity to enter paradise. Europe enjoys the paradise it enjoys, in part because the United States provides the overall security that allows Europe to live in a system where military power is not a major issue.
When it comes to setting national priorities, determining threats, defining challenges, and fashioning and implementing foreign and defense policies, the United States and Europe have parted ways.
Americans are from Mars, Europeans are from Venus: they agree on little and understand each other less and less.